Free Email Deliverability Tools

Generate and validate SPF, DKIM and DMARC records, fix issues, and show your deliverability status, all with free tools from InboxGreen.

SPF / DKIM / DMARC Checker

Run full authentication check for your domain in seconds. See SPF/DKIM/DMARC status plus common misconfigurations.

Build a valid SPF TXT record for your domain with includes, IP ranges and the right final all policy.

Generate a DMARC TXT record with p=none, quarantine or reject, plus RUA/RUF report addresses.

Check if your DKIM selector is published correctly. Useful for Google Workspace, Microsoft 365, SendGrid, and more.

Fetch your DMARC record and explain policy, alignment, rua/ruf, and common mistakes in plain language.

Paste raw headers and extract SPF, DKIM and DMARC authentication results fast.

Check if your domain or sending IP is listed on Spamhaus, SpamCop or Barracuda. Instant results.

Check MX records for any domain. Useful for diagnosing mail routing, provider setup, and misconfigured email hosting.

List all TXT records for a domain in one place. Great for SPF, domain verification strings, and debugging conflicts.

Get a prioritized checklist of fixes for your domain’s email authentication so you can move from red to green quickly.

Copy-paste SVG badges that show your deliverability status on your website, linking back to a live InboxGreen check.

Integrate SPF, DKIM and DMARC checks into your own workflows and dashboards using the InboxGreen API.

Check if your domain has a BIMI record and whether your logo will display in Gmail, Apple Mail, and Yahoo.

Check if your domain has MTA-STS configured to force TLS on inbound email. Validates DNS record and policy file.

Look up and validate the SPF record for any domain. Count DNS lookups, check the all= enforcement, and spot permerror risk.

More tools coming soon. This page is the central hub for free email deliverability tools.